50M Please help - New super hub is very unstable and SLOW!

pop80_uk · 12-06-2015, 20:09

Hi people
Can you help me please!

I have been on 20mb for ages and had a VMNG300 virgin modem connected to a Netgear N900 router.

Wireless to iphone and laptop

Wired ethernet from router to desktop PC.

Had to change packages and part of this was a 50mb upgrade and a new superhub.

It arrived today and something is not right!
Set it up, activated it and enabled modem only mode, these are the problems im having:

1) It keeps rebooting every 3 - 4 minutes and the connection its terribly unstable and slow, painfully slow. This is on the wired connection. It was fine on the old modem and never did this!

2) It does not appear to be able to cope with multiple connection requests from the desktop PC (i.e lots of tabs opened and refreshing at the same time)

3) Turning off modem mode and going back to standard mode improves it slightly but not much.

Can anyone help?

Should I be turning off some settings to get it to stop, are the security settings of this delivery getting in the way of the routers?

Ive only had it a day and its a step backwards from my old equipment and connection at the moment!

Thanks

Sephiroth · 12-06-2015, 22:51

Superhub in modem mode should behave exactly the same as with the VMNG300. except that with the SH you get 8 downstream channels. Nothing needs turning off before going into modem mode.

So if it doesn't, one of two things will have occurred:

1. The SH you have is faulty;

2. Thee is a circuit impairment.

We can check that for you to some extent if you paste your downstream, upstream and operational config stats.

pop80_uk · 12-06-2015, 23:31

Quote:

Originally Posted by Sephiroth

Superhub in modem mode should behave exactly the same as with the VMNG300. except that with the SH you get 8 downstream channels. Nothing needs turning off before going into modem mode.

So if it doesn't, one of two things will have occurred:

1. The SH you have is faulty;

2. Thee is a circuit impairment.

We can check that for you to some extent if you paste your downstream, upstream and operational config stats.

Superhub is currently in normal mode (with wifi turned off), when I turn on modem mode it goes all funny and starts rebooting itself.

Downstream Channels
Lock Status Channel ID Frequency Modulation Rx Power RxMER Pre RS Errors Post RS Errors
Locked 12 434250000 Hz 256 QAM -1.9 dBmV 37.9 dB 1310 920
Locked 9 410250000 Hz 256 QAM -1.6 dBmV 37.6 dB 1300 954
Locked 10 418250000 Hz 256 QAM -1.6 dBmV 37.4 dB 1123 983
Locked 11 426250000 Hz 256 QAM -1.8 dBmV 37.9 dB 1092 996
Locked 13 442250000 Hz 256 QAM -1.9 dBmV 37.9 dB 992 991
Locked 14 450250000 Hz 256 QAM -1.9 dBmV 37.9 dB 941 939
Locked 15 458250000 Hz 256 QAM -1.9 dBmV 37.9 dB 1015 1015
Locked 16 466250000 Hz 256 QAM -2.1 dBmV 37.9 dB 936 936

Upstream Channels
Lock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate
Locked 2 39400000 Hz ATDMA 52.5 dBmV 64QAM 6400000 Hz 5120 Ksym/sec
NotLocked 0 0 Hz 0 dBmV 0 Ksym/sec
NotLocked 0 0 Hz 0 dBmV 0 Ksym/sec
Locked 3 32600000 Hz ATDMA 52.5 dBmV 64QAM 6400000 Hz 5120 Ksym/sec

Sephiroth · 13-06-2015, 00:08

Your upstream is above the currently recommended (by VM) power threshold which is 51 dBmv. (Actually if it's stable at 52.5 dBmv and you have 2 upstream channels, then it should work till it hits 54 dBmv).

But that doesn't explain the modem mode aberration unless you've made a booboo. When you switch modem mode on it is supposed to reboot itself. So exactly what happens? Detail is everything.

pop80_uk · 13-06-2015, 00:10

Quote:

Originally Posted by Sephiroth

Your upstream is above the currently recommended (by VM) power threshold which is 51 dBmv. (Actually if it's stable at 52.5 dBmv and you have 2 upstream channels, then it should work till it hits 54 dBmv).

But that doesn't explain the modem mode aberration unless you've made a booboo. When you switch modem mode on it is supposed to reboot itself. So exactly what happens? Detail is everything.

When I turn modem mode on, the wired connection just keeps loosing connection every minute or so. Turn it off and disable IP Flood detection and its fine.

Its really odd

Sephiroth · 13-06-2015, 00:54

Is the Netgear Router attached in modem mode?

pop80_uk · 13-06-2015, 07:56

Quote:

Originally Posted by Sephiroth

Is the Netgear Router attached in modem mode?

Nope, none of its settings have been changed from being connected to the old modem

Sephiroth · 13-06-2015, 18:00

Then do attaché the Netgear router which you did indeed have connected to the VMNG300,

Switch off both modem (which now should be in modem mode) & router. Connect router and power up. When the N900 is in a state of grace, power up the SH and await your blue lights.

Let us know how that goes.

General Maximus · 13-06-2015, 18:32

the shubs firewall is pants anyway so if disabling ip flood detection fixes the problem then leave it that way. My upstream power was 52.x for a very long time and I never had any probs whatsoever with performance or stability.

Sephiroth · 13-06-2015, 18:51

In modem mode, mon General?

jb66 · 13-06-2015, 21:14

is it really a NEW superhub or an old SH1?

pop80_uk · 13-06-2015, 22:04

Quote:

Originally Posted by jb66

is it really a NEW superhub or an old SH1?

Its anew superhub, 100%, I have just left it as it is. Seems to work and its not much different to modem mode.

Thanks for your help

Sephiroth · 13-06-2015, 22:22

Quote:

Originally Posted by Sephiroth

Then do attaché the Netgear router which you did indeed have connected to the VMNG300,

Switch off both modem (which now should be in modem mode) & router. Connect router and power up. When the N900 is in a state of grace, power up the SH and await your blue lights.

Let us know how that goes.

Did you try this?